Body of woven fabric for incandescent lights.



PATENTBD AUG. 14, 1906.

A. MAOZIOSSEK. BRIG FOR INGANDBSGENT LIGHTS.

P. BODY OF WOVEN PA APPLICATION FILED 00T.14, 1905 z77ws .505.

In: NORRIS PETERS ca, wasumaron, 9. c

FRIEDRICH ANTON THE FIRM OF GASGLIIHLIOHT GESELLSCHAFT terations inform, rupture I UNITED STATES HAMBURG, GERMANY.

PATENT OFFICE.

MAGZIOSSEK, OF HAMBURG, GERMANY, ASSIGNOR TO HAMBURG M. B. H.,' OF

BODY OF WOVEN FABRIC FOR INCANDESCENT LlGHTS.

Specification of Letters Patent.

Patented Aug. 14, 1906.

Application filed October 14. 1905. Serial No. 282.856.

To all whowt it may concern:

connections is prevented, because the multiple wefts referred to above,owing to their MAOZIOSSEK, a subject of the King of 'Prusgreat slacknessin this arrangement, permit of sia, German Emperor, and a resident 1nthe a peripheral contraction or city of Hamburg and German Empire, haveinvented certain new and useful Improvements in Bodies of Woven Fabricfor Incandescent Gas-Lights, of which the following is a specification.

Ordinary incandescing bodies or mantles consist of woven fabrics inwhich meshes are suspended one in another. Now in the burn ing-offprocess, and even more so in use, contractions of the threads andalteration of form of the exceedingly-fragile fabric are caused byincineration, so that there is a danger of the meshes giving way herethey interlace and prematurely destroying the mantle, because owing tothe tensions in the threads the brittle interlocking mesh-turns are alsosubjected to friction, and then as a result of their sharp curvature andkinks and their small strength they break and give way, thereby at onceforming holes in the mantle, so that it is speedily rendered useless andits life is unduly shortened.

Now in accordance with the present invention the texture hithertoemployed is replaced by a fabric consisting of longitudinal or warpthreads stretched as much as possible or running slightly zigzag andconnected by random weft-threads. Owing to this arrangement thealteration in form of the mantle is able to take place duringincandescing or incineration without the thread, which is subjected totensional and other strains, being so firmly held as to alter or destroythe fabric, as when vertical mo diiic ations in the form of the mantleoccur the longitudinal threads, being almost straight, are readily ableto contract during incineration, and, further, the transverse threads,which only connect groups of these longitudinal threads, present noimpediment to the former and are able to participate in theirdisplacement and are also themselves free to extend. By this means anincandescing body of speciallystrong structure is obtained, which isnecessary owing to the strain placed upon it in the alternate expansionsand contractions resulting from the wide variations of tempera- When themantle undergoes radial alof the transverse ture.

expansion 0 mantle. The arrangement of having the longitudinal threadsof the mantle interwoven with one or more threads provided with loopedbundles gives these latter great freedom of movement, owing to theirlooped form, for extension and contraction in-heating and coolingwithout exerting any prejudical effect upon the fabric. If in place ofthese loops only a single stretched thread held the longitudinal threadstogether, it is clear that upon the extension or contraction of thehorizontal thread it would have during these operations no such freedomof movement; but would exert a tying action upon the fabric unit andwould oppose a powerful resistance to any alteration in thecircumference or diameter of the mantle, such as frequently takes placein mantles above the burner-head during burning, and more especially inthe case of compressed gas, because owing asalready explained to therenot being sufficient slackness. Owing to these circumstancesincandescent mantles as hithereto manufactured readily crack and becomedeformed, the jets of flame which then issue therefrom rendering theglass chimney very liable to break.

Figure 1 is a fragmentary view, on an enlargedscale, showing the weave;and Fig. 2 is a view of a mantle made of such fabric.

In Fig. 1 of the accompanying drawings a portion of the fabric of anovel incandescing slightly-em which groups of longitudinfal threads I)in such a manner that these latter lie side by side a number of timesand pass in the groups of thread lengths a and are connected one withthe other through the longitudinal threads. In the example hererepresented three wefts have been shown; but a greater number of weftsmay be placed side by side.

While on the one hand the wefts effect an especially secure connectionof the longitudinal and transverse threads, on the other hand thenumerous mesh-turns engaging one in the other and presenting sharpcurves and kinks, as in mantles hithereto manufactured, are obf theviated; Each weft-thread loop 0 of the novel mantle does not engage withanother sharply-curved loop, but around a stretched or but slightly-bentthread, so that it is less exposed to rupture than in the fabrichithca1m 1. An incandescent-mantle fabric having threads in one directionarranged in sets and weft-threads woven back and forth through thealternate sets and only once across andthrough the other sets,substantiall as and for the purpose set fort lesser number of timesacross and through the other sets, substantially as and for the purposesset forth.

incandescent-mantle fabric having sets, the greater number of bacland-forth weaves of one weft-thread in a set being adj acent the lessernumber of weaves of the adjacent weft-thread in the same set of longi--tudinal threads, substantially as and for the purpose set forth.

number of back-and-forth weaves of one weftthread in a set beingadjacent the lesser number of weaves of the adjacent Weft-thread in thesame set of longitudinal threads, and the a set are heldby loops ofadjacent wefteads, substantially as and for the purposes set forth.

FRIEDRICH ANTON MACZIOSSEK.

Witnesses:

HARRY RAEOKNER, ERNEST H. L. MUMMENHOFF.

